Sodium azide (NaN_3) is used in the airbag of cars. This is a...

Sodium azide $\left(\mathrm{NaN}_3\right)$ is used in the airbag of cars. This is a safety device which inflates on an impact according to the reaction $2 \mathrm{NaN}_3 \rightarrow 2 \mathrm{Na}+3 \mathrm{~N}_2$ An air bag of a particular car can be filled with 44.8 L of gas at STP. The mass $(\mathrm{g})$ of $\mathrm{NaN}_3$ required to fill this airbag completely at 298 K and 1 atm . pressure is